"The 3rd Hospital" is Korea's first medical drama about the doctors from both Eastern and Western medicine and the story centers around the Neurology department in the hospital. Genius neurosurgeon Kim Doo Hyun (Kim Seung Woo) and genius eastern doctor Kim Seung Hyun (Oh Ji Ho) will face off in work and in love.

Sooyoung will portray violist Lee Eui Jin, who is in love with Kim Seung Hyun, with whom she spent her childhood.

In this episode, Lee Eui Jin returns from studying abroad and is planning a surprise first meeting with Kim Seung Hyun. While at the hospital, she meets Kim Doo Hyun for the first time as well. Hiding under Kim Seung Hyun's desk, her legs fall asleep and receive instant acupuncture from Kim Seung Hyun.

Like a love-lost girl, she follows Kim Seung Hyun everywhere. Though he pretends to not be satisfied with her, he thinks that she is being cute. Lee Eui Jin also was able to show her viola skills, holding an impromptu concert for the hospital's patients. Near the end of the episode, Kim Eui Jin seems to be experiencing intense headaches, an omen for future misfortune.

Sooyoung received good reviews for her first broadcast and with her cute and outgoing acting she gave a fresh breath of air to a relatively intense medical drama. She herself received acupuncture for the scene and Oh Ji Ho complimented her, saying that it will surprise everyone.